If family: be warned that Elephant Hill is a long day. It's gorgeous and I highly recommend it, but you should prepare your wife up front. It's probably easier with a baby (who will sleep) than a toddler (who will get tired quickly of being in the car for so long).

If no family: run something other than Chicken Corners. It's a neat trail, but you won't learn anything. You could run Poison Spider, Metal Masher, Porcupine Rim, Gold Bar Rim or Hells Revenge with no problem. Golden Spike or Kane Creek would be OK too, if you have a lift and rear locker.